Details
Originalsprache | Englisch |
---|---|
Aufsatznummer | 340649 |
Fachzeitschrift | Analytica chimica acta |
Jahrgang | 1239 |
Frühes Online-Datum | 28 Nov. 2022 |
Publikationsstatus | Veröffentlicht - 25 Jan. 2023 |
Abstract
Here, we present a new and an easy to assemble dielectric barrier discharge plasma ionization source based on printed circuit boards with two parallel isolated electrodes for generating a plasma inside an inert fused silica capillary. For demonstration, this plasma source is coupled to an ion mobility spectrometer. With two different sample gas feeds the analytes can either pass through the plasma or bypass the plasma before entering the reaction region of the ion mobility spectrometer, allowing for different ionization pathways, e.g. electron impact ionization, ionization by excited species, e.g. helium metastables, or chemical ionization via reactant ions generated inside or downstream of the plasma. The plasma source, in particular, the electrode geometry and the capillary diameter were designed with the help of electric field simulations. A rectangular electrode with a height of at least twice the outer diameter of the capillary turned out to be ideal, in both the simulation and the experiment. Furthermore, a simple control electronics has been developed, which can be easily applied to other plasma sources. With the plasma source presented here, detection limits in the mid pptv range have been reached.
ASJC Scopus Sachgebiete
- Chemie (insg.)
- Analytische Chemie
- Biochemie, Genetik und Molekularbiologie (insg.)
- Biochemie
- Umweltwissenschaften (insg.)
- Umweltchemie
- Chemie (insg.)
- Spektroskopie
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in: Analytica chimica acta, Jahrgang 1239, 340649, 25.01.2023.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Easy to assemble dielectric barrier discharge plasma ionization source based on printed circuit boards
AU - Hitzemann, Moritz
AU - Schaefer, Christoph
AU - Kirk, Ansgar T.
AU - Nitschke, Alexander
AU - Lippmann, Martin
AU - Zimmermann, Stefan
N1 - Funding Information: Supported by the German Federal Ministry of Education and Research (BMBF) under the Grant 13N14888 .
PY - 2023/1/25
Y1 - 2023/1/25
N2 - Here, we present a new and an easy to assemble dielectric barrier discharge plasma ionization source based on printed circuit boards with two parallel isolated electrodes for generating a plasma inside an inert fused silica capillary. For demonstration, this plasma source is coupled to an ion mobility spectrometer. With two different sample gas feeds the analytes can either pass through the plasma or bypass the plasma before entering the reaction region of the ion mobility spectrometer, allowing for different ionization pathways, e.g. electron impact ionization, ionization by excited species, e.g. helium metastables, or chemical ionization via reactant ions generated inside or downstream of the plasma. The plasma source, in particular, the electrode geometry and the capillary diameter were designed with the help of electric field simulations. A rectangular electrode with a height of at least twice the outer diameter of the capillary turned out to be ideal, in both the simulation and the experiment. Furthermore, a simple control electronics has been developed, which can be easily applied to other plasma sources. With the plasma source presented here, detection limits in the mid pptv range have been reached.
AB - Here, we present a new and an easy to assemble dielectric barrier discharge plasma ionization source based on printed circuit boards with two parallel isolated electrodes for generating a plasma inside an inert fused silica capillary. For demonstration, this plasma source is coupled to an ion mobility spectrometer. With two different sample gas feeds the analytes can either pass through the plasma or bypass the plasma before entering the reaction region of the ion mobility spectrometer, allowing for different ionization pathways, e.g. electron impact ionization, ionization by excited species, e.g. helium metastables, or chemical ionization via reactant ions generated inside or downstream of the plasma. The plasma source, in particular, the electrode geometry and the capillary diameter were designed with the help of electric field simulations. A rectangular electrode with a height of at least twice the outer diameter of the capillary turned out to be ideal, in both the simulation and the experiment. Furthermore, a simple control electronics has been developed, which can be easily applied to other plasma sources. With the plasma source presented here, detection limits in the mid pptv range have been reached.
KW - API
KW - Atmospheric pressure ionization
KW - DBD
KW - Dielectric-barrier discharge
KW - IMS
KW - Ion mobility spectrometry
KW - Plasma ionization source
UR - http://www.scopus.com/inward/record.url?scp=85143539608&partnerID=8YFLogxK
U2 - 10.1016/j.aca.2022.340649
DO - 10.1016/j.aca.2022.340649
M3 - Article
AN - SCOPUS:85143539608
VL - 1239
JO - Analytica chimica acta
JF - Analytica chimica acta
SN - 0003-2670
M1 - 340649
ER -